FR3062230A1 - SORTING AND COUNTING MACHINE - Google Patents

Abstract

The present invention relates to a machine for sorting and / or counting loose objects, comprising: - a turntable, intended to receive the objects in bulk, and to drive them in rotation, - a belt system, circular periphery of the plate, configured to form a lateral support for the objects centrifuged by the turntable, and to a fixed output constituted by a peripheral zone without lateral support, through which the objects organized in file and deprived of support centrifugal force resistant are ejected, characterized in that said belt system is rotating, configured so that the lateral support creates is synchronized to the rotational speed of the plate and rotating jointly with said plate.

Description

Holders): VELEC SYSTEMES.

O Extension request (s):

© Agent (s): CABINET PLASSERAUD.

FR 3 062 230 - A1 ® SORTING AND COUNTING MACHINE.

@) The present invention relates to a machine for sorting and / or counting loose objects, comprising:

- a turntable, intended to receive loose objects, and to drive them in rotation,

- a belt system, circular at the periphery of the plate, configured to constitute a lateral support for objects centrifuged by the turntable, and up to a fixed outlet, constituted by a peripheral zone without lateral support, through which the objects organized in a line and deprived of centrifugal force-resistant support are ejected, characterized in that said belt system is rotating, configured so that the lateral support created is synchronized with the speed of rotation of the plate and rotating together with said tray.

The invention relates to a machine for sorting and / or counting objects. The field of the invention relates more particularly to sorting and / or counting machines using centrifugal force to place the objects one after the other from a bulk.

The invention finds a particular application for sorting and / or counting coins or similar coins at high speed, that is to say with a processing capacity greater than 2000 coins / minute.

A machine for sorting and / or counting coins using centrifugal force comprises a circular, rotating plate on which are deposited the loose objects to be sorted such as coins, as well as a fixed, vertical wall belt bordering the plate. turning on its periphery.

In such a machine, the parts present on the plate are sorted and placed in line by driving the latter in rotation. Due to friction due to gravity, the parts resting on the platform are rotated and ejected in the direction of the belt under the effect of centrifugal force until the edge of the parts comes into contact with the belt, this belt then offering lateral support opposing the centrifugal force. The parts thus roll along the peripheral belt, which is fixed, and up to a local opening in the wall of the belt where the parts, deprived of support resistant to centrifugal force, are ejected. A linear conveyor optionally allows the queue of organized objects to be taken up one after the other downstream of the exit. Such a state of the art is for example described in the introduction to document FR 2,288,358. Alternatively, the output parts can be collected directly in a hopper.

If at first, the sorting and / or counting capacity of such equipment increases with the speed of rotation of the plate and especially the peripheral linear speed of the plate, it drops suddenly, past a peripheral linear speed, critical. According to the inventors' observations, past this critical speed, the friction of the parts on the peripheral belt (fixed element) due to centrifugal force becomes preponderant compared to the friction due to gravity between the parts and the plate. In other words, the floats between the parts and the plate are insufficient and there is then a very significant slip between the parts and the turntable which no longer properly drives the rotating parts.

The sorting and / or counting capacity depends on the diameter of the pieces to be counted and sorted. Understandably, the sorting capacity of a sorting and / or counting machine decreases the more the diameter of the pieces increases. Typically, the specifications of the manufacturers of such sorting machines give the sorting capacities of their machine by a correspondence table setting out the sorting capacities of the machine (in pieces per minute) and for each diameter of pieces to be sorted (in mm). . By way of comparison, and according to the knowledge of the Applicant, the capacity of sorting and / or counting machines available on the market is of the order of 2000 pieces per minute (or less) for a piece diameter of 28mm, in other words a capacity well below 3000 pieces / minute.

The object of the present invention is to overcome the aforementioned drawbacks by proposing a sorting and / or counting machine, with a sorting and / or counting capacity that is much greater compared to the machines known in the prior art.

Other purposes and advantages will become apparent during the description which is given for information only and which is not intended to limit it.

The invention also relates to a machine for sorting and / or counting loose objects, comprising:

- a turntable, intended to receive loose objects, and to drive them in rotation,

- a belt system, circular at the periphery of the plate, configured to constitute a lateral support for objects centrifuged by the turntable, and up to a fixed outlet, constituted by a peripheral zone without lateral support, through which the objects organized in file and deprived of support resistant to centrifugal force are ejected.

According to the invention, said belt system is rotating, configured so that the lateral support created is synchronized with the speed of rotation of the plate and rotating together with said plate.

According to optional features of the invention, taken alone or in combination:

the belt system comprises several independent belt sections distributed over the periphery of the plate, synchronized with the rotation of the plate according to a first degree of freedom in rotation to drive the objects, each belt section being movable according to a second degree to pass from an engagement position, where said belt section constitutes a lateral support for the object centrifuged by the plate opposing the centrifugal force, towards a released position where the belt section retracts and deprives the support object of resistance to centrifugal force;

- Each belt section is driven by an articulated arm, substantially radial, connecting the plate and said belt section, ensuring the rotational drive of said section together with the plate;

each arm is pivotally articulated in particular at its end proximal to said plate along an axis perpendicular to the axis of rotation of the plate and perpendicular to the longitudinal axis of the arm, said pivot constituting the second degree of freedom allowing said belt section to pass from the engagement position, high, where said belt section constitutes a lateral support for the object centrifuged by the plate, towards the released position, low, where the belt section retracts and deprives the object of centrifugal force-resistant support;

the machine has a control device configured to control the movement of each belt section according to the movement of travel authorized by the second degree of freedom to pass the belt section from the engagement position to the released position, and vice versa, and as a function of the angular position of said belt section during its displacement according to the displacement stroke authorized by the first degree of freedom in this case the continuous rotation synchronized with that of the plate, with reference to the fixed outlet with respect to the built.

According to one embodiment, said control device comprises:

- a cam forming a circular track, secured to a fixed frame of the machine;

- cam followers, respectively integral with the belt sections, able to follow the circular path of the track during rotation, said track having a slope at the exit zone followed by the cam followers causing the passage of the sections from their engagement position to their disengaged position, conversely;

According to optional features of the invention, taken alone or in combination:

- spring systems, such as a metal or pneumatic spring, constrain the cam followers against the cam track;

- a cover extends as a peripheral covering the peripheral border area of the turntable, the inter-space between the underside of the cover and the upper surface of the turntable defining the maximum insertion height for organized centrifuged objects at the edge of the plateau;

- The device includes a height adjustment system between the cover and the tray;

- The device includes a counting cell, targeting the objects organized and in line one after the other.

According to another embodiment, the belt system is a belt element, circular, in one piece, driven in rotation about its axis, and synchronously with the turntable, the axis of rotation of the tray and the axis of rotation of the belt element being inclined so that the belt element protrudes above the platform on a first angular section of the turntable, fixed relative to the frame, providing lateral support for the objects present at the edge of the plate, and is retracted below the rotating plate on a second angular section fixed relative to the frame, diametrically opposite from the rotating plate, the belt element depriving the supporting objects resistant to centrifugal force.

According to this latter embodiment, the machine may comprise a fixed deflector, positioned locally just downstream of the outlet providing a fixed lateral support by which the pieces side by side of the organized pieces are spaced from the outlet, the fixed lateral support s extending downstream of the outlet over the entire second angular section for which the rotating belt element is retracted below the plate to the first angular section for which the rotating belt element protrudes above the plate, providing again a rotating lateral support, synchronized with the rotation of the plate.

The invention also relates to a method of sorting and / or counting coins implemented in a machine according to the invention. According to one embodiment, the tray and the belt system are rotated at a speed so as to obtain a sorting and / or counting capacity greater than 3000 pieces per minute, such as between 5000 and 10000 pieces per minute , for a workpiece diameter of 28 mm (or more).

The invention will be better understood on reading the following description accompanied by the accompanying drawings, among which:

FIG. 1 is a partial top view of a sorting and / or counting machine according to the invention according to one embodiment,

FIG. 2 is a partial view of the machine of FIG. 1 mainly illustrating the turntable and the different length sections of the belt system,

FIG. 3 is a bottom view of the turntable, illustrating the substantially radial arms, respectively connecting the belt sections to said tray, under the latter, synchronizing the belt sections in rotation to the turntable,

- Figure 4 is a perspective view, partial, illustrating the counting cell, suitable for targeting objects organized in line (one after the other) on the edge of the plate during its rotation, as well as a conveyor linear, substantially tangent to the diameter of the plate, capable of picking up objects ejected through the outlet,

- Figure 5 is a sectional view, substantially vertical, at the edge of the plate illustrating the cooperation between the cam follower, in this case a roller, and the track of a cam at a location on the track where the latter constrains the belt section in its high engagement position, where said belt section constitutes a lateral support for an object centrifuged by the plate, this lateral support opposing the centrifugal force,

- Figure 6 is a sectional view, substantially vertical, at the edge of the plate illustrating the cooperation between the cam follower, in this case a roller, and the track of a cam at a location on the track where the latter allows the belt section to pass (under the action of gravity aided by a spring system) in its released, low position, where the belt section retracts and deprives the support object resistant to centrifugal force,

- Figure 7 is a graph (with on the ordinate the processing capacity in parts / minutes and on the abscissa the peripheral linear speed of the plate) illustrating the evolution of the sorting capacities of a machine according to the state of the art as a function peripheral speed,

- Figure 8 illustrates a sorting and / or counting machine according to the invention according to a second embodiment for which the belt system is an element in one piece, with an axis of rotation inclined relative to the axis of rotation of the plate, so that the belt element protrudes above the plate on a first angular section of the turntable, fixed relative to the frame, providing lateral support for the objects present at the edge of the plate, and is retracted below the rotating plate on a second angular section, fixed relative to the frame, diametrically opposite from the rotating plate, the belt element depriving the supporting objects resistant to centrifugal force on this second angular section,

- Figure 9 is a perspective view of the machine according to Figure 8, illustrating the fixed deflector, forming a fixed ramp, downstream of the outlet, providing a fixed lateral support for objects up to the (first) angular section for which the rotating belt protrudes above the plate, again providing a rotating lateral support, synchronized with the rotation of the plate.

Also, the invention relates to a machine 1 for sorting and / or counting loose objects, comprising a turntable 2, intended to receive the loose objects and to drive them in rotation, and a belt system 3, circular, on the periphery of the plateau.

The plate 2 is substantially circular (namely a disc) and is driven in rotation about its axis by an electric motor. The tray can be horizontal or inclined with respect to the horizontal. The belt system 3 is configured to constitute a lateral support for the objects centrifuged by the turntable, and resting on the edge of the turntable, and up to an outlet S, fixed, constituted by a peripheral zone without lateral support, through from which objects organized in a row (one after the other) and deprived of support resistant to centrifugal force, are ejected. Optionally, a linear conveyor 8, tangent to the disc, picks up the objects organized in line, downstream of this outlet S. Alternatively, the objects organized in line can fall directly into a hopper (example not illustrated).

The turntable 2 preferably has a smooth surface, at least at its edge 20 on which the centrifuged and organized objects rest. The central part of the plate can include a conical deflector 21, coaxial with the plate 2, the slope of which descends radially outwards and allows objects to be chased towards the belt system 3.

This single combination of characteristics is known per se from the state of the art: notably, and in the sorting and counting machines of the prior art for coins, the belt system is constituted by a belt, fixed relative to the frame of the machine, while the plate is provided rotating. If at first the sorting and / or counting capacity of such equipment increases with the speed of rotation of the plate, and thus the peripheral linear speed of the plate, it drops suddenly, after a speed of rotation of the plate, critical .

The graph in FIG. 7 illustrating the processing capacity (in parts per minute: p / min) on the ordinate as a function of the peripheral speed of the plate on the abscissa (meter per minute: m / min) makes it possible to illustrate this phenomenon: the curve shows that the processing capacity increases with the peripheral speed of the plateau up to the critical speed Vc where the capacity levels off, before dropping sharply. By way of comparison and in the coin sorting and counting machines of the state of the art as previously described, the processing capacity at the critical speed is of the order of 2000 coins or less for a workpiece diameter equal to 28mm.

According to the inventors' observations, after this critical speed, and in the machines of the state of the art, the friction of the parts on the peripheral belt (fixed element) due to the centrifugal force becomes preponderant compared to the friction between the parts and the plateau, due to gravity. In other words, the floats between the parts and the plate are then insufficient and there is then a very significant sliding between the parts and the turntable which no longer properly drives the rotating parts: the invention makes it possible to respond to this problem.

Advantageously, and according to the invention, said belt system 3 is rotating, and is configured so that the lateral support created is synchronized with the speed of rotation of the plate 2 and rotating jointly with said plate.

Advantageously, the objects centrifuged by the rotating plate, organized one after the other, resting on the edge of the plate 2, are not only driven in rotation by the friction due to gravity with the edge of the plate 2, but also by friction due to centrifugal force with the lateral support, constituted by the belt system, rotating jointly with the plate. In other words, the lateral support is no longer a brake which opposes the drive of the plate according to the known prior art, but becomes, according to the invention, a working element working (in concert with the plate) to training objects such as coins. For example, and in the case of parts, the face of the parts rests on the edge of the plate and the edge of the parts comes into contact with the lateral support of the belt system, under the effect of centrifugal force.

Placed under the same conditions, and according to the invention, it has been possible to very significantly increase (to double or even triple them) the processing capacities, in comparison with sorting and / or counting machines. state of the art, namely to achieve sorting and / or counting capacities of 7000 pieces per minute for a diameter of pieces of 28mm, and on a first prototype built: the invention brings a notable gain in terms of processing capacity.

According to an illustrated embodiment which corresponds to this prototype, the belt system 3 comprises several belt sections 30, independent (distinct), contiguous, distributed over the periphery of the plate. The different belt sections 30 placed end to end form the belt extending in length along the periphery around the turntable. To this end, the various belt sections 30 are rigid, arched elements, which when placed end to end form a substantially circular belt, bordering the periphery of the turntable. The material of the sections can be metal or another wear-resistant material, in order to avoid wear due to the contact of the coins.

These belt sections 30 are synchronized with the rotation of the plate 2 according to a first degree of freedom in rotation. This first degree of freedom in rotation ensures the training of the belt system together with the plate to ensure and promote the training in rotation of objects, in particular coins.

Notably, each belt section 30 is also movable (and independently of each other) in a second degree to pass from an engagement position PI, where said belt section 30 constitutes a lateral support for the object centrifuged by the plate opposing the centrifugal force (position illustrated in FIG. 5), towards a disengaged position P2, where the belt section 30 retracts and deprives the bearing object resistant to the centrifugal force (position illustrated in Figure 6).

It is understood that the belt sections 30 are maintained in their position of engagement PI at the locations on the periphery of the plate where the lateral support is required, and the belt sections P2 are caused to pass into their released position P2, at exit S, where you want to eject the objects out of the tray.

Each belt section 30 can be driven by an articulated arm 4, substantially radial, positioned under the plate, connecting the plate 2 and said belt section 30, ensuring the rotational drive of said belt section 30 together with the plate, according to the first degree of freedom.

For example, each arm 4 is pivotally articulated (in particular at its proximal end 40), to said plate along an axis of rotation, perpendicular to the axis of rotation of the plate and perpendicular to the longitudinal axis of the arm. This pivot joint at the proximal end 40 of the arm constitutes the second degree of freedom allowing said belt section 30 to pass from the high engagement position PI, where said belt section constitutes a lateral support for the centrifuged object. by the plate, towards the released position P2, low, where the belt section 30 retracts and deprives the bearing object resistant to centrifugal force.

The machine may also include a control device 5 configured to control the movement of each belt section 30 according to the movement of travel authorized by the second degree of freedom to pass from the belt section from the engagement position PI to the position clear P2, (and vice versa) as a function of the angular position of said belt section 30 during its displacement in rotation, according to the displacement stroke authorized by the first degree of freedom, in this case the continuous rotation synchronized with that of the platform, and with reference to the output S (fixed relative to the frame).

Such a control device 5 can include:

- a cam 50 forming a circular track, integral with a fixed frame of the machine,

- Cam followers 51, respectively integral with the belt sections 30, able to follow the circular path of the track during rotation.

Notably, the track has at the exit zone S, for example slightly upstream (according to the direction of rotation of the plate), a slope (descending) followed by the cam followers 51 causing the passage of the belt sections from their engagement position PI to their released position P2. A slope (rising from the track) followed by the cam followers causes the belt sections 20 to return from their released position P2 to their engagement position PI, for example slightly downstream of the exit S.

The cam track 50 extends in the vicinity of the periphery of the circular plate 2, preferably under the latter. As illustrated by way of example, the cam followers 51 may be rollers, for example respectively integral with the distal ends 41 of the arms 4, each of the rollers being articulated to the arm along an axis of rotation parallel to the longitudinal axis of the arm .

In other words, and according to this embodiment:

the level of the track of the cam 50 is high over the major part of the periphery of the belt system in order to force the sections 30 in the high position in their position of engagement PI where these sections 30 form a continuous lateral support for the objects centrifuged by the plate 2, thus opposing the centrifugal force;

the level of the track is low on the angular part of the track in correspondence with the exit S in order to cause the passage of the sections 30 in their released position P2 where these sections retract and deprive the centrifuged objects of the lateral support , thus causing objects to be ejected through exit S.

Advantageously, spring systems 6, such as a metal or pneumatic spring, constrain the cam followers 51 against the track of the cam 50. Such a system is illustrated by way of example in FIG. 6. Each system 6 comprises a body 60 cylindrical. A piston slides inside the cylinder, forced to deploy under the action of a spring (metal in compression or pneumatic) inside the body 60. The piston rod 61 is forced by the action of the spring at deployment.

According to this embodiment, the body 60 is rigidly secured to the articulated arm 4 while the piston rod 61, projecting from the body is stressed by the spring and supported by its free end on the underside of the plate. The action of the spring thus constrains the articulated arm 4 downward, and thus forces the cam follower 51 at the distal end of the arm to follow the trajectory of the track of the cam 50. It is ensured that the followers of cam 51 follow the slope of the track, even at high speed of rotation of the platform 2 and without inadvertent jumps when the level of the track changes.

According to one embodiment, a cover 7 extends at the periphery overlapping the peripheral border area of the turntable 2, the interspace along the height h between the underside of the cover and the upper surface of the turntable defining the maximum insertion height for organized objects centrifuged at the edge of the tray. The central part of the lid is open to allow the tray to be fed with loose objects.

The machine may include a system for adjusting the height h between the cover 7 and the plate 2. The height h of Γ inter-space separating the underside of the cover is preferably adjusted so as to avoid the exit of objects in overlay. For example, in the case of parts, the height h is adjusted greater than the thickness of a part, but less than the thickness of two superimposed parts.

A fixed deflector 10 can also be provided, locally just downstream of the outlet S. The function of the fixed deflector 10 is to prevent the exit of the parts side by side by constituting a ramp, fixed, providing lateral support (fixed ) thanks to which side-by-side pieces of organized pieces (ie the pieces organized in a line authorized to exit) are removed from the exit.

Optionally, the objects (such as the parts) aligned one after the other, sliding (or rolling) on the ramp of the deflector 10 can be evacuated by a second outlet, distinct from the outlet S (not illustrated). Objects can be counted downstream of this second output, in order to further increase sorting and / or counting capacities.

Still the machine can include a counting cell 8, targeting the objects organized and in a row one after the other. The counting cell 8 allows the contactless detection of the parts: it can target objects directly on the edge 20 of the plate, or even downstream of the output S. It is used to count objects such as parts at high speed.

According to a second embodiment illustrated in Figures 8 and 9, the belt system 3 can be a belt element 31, circular, in one piece, substantially cylindrical. This belt element 31 is rotated about its axis A31, and synchronized with the turntable 2.

Significantly, and as illustrated by way of illustration in FIG. 8, the axis of rotation of the plate A2 and the axis of rotation A31 of the belt element 31 are inclined at an angle a so that that the belt element 30:

- either projecting above the plate 2 on a first angular section βΐ of the turntable 2, fixed relative to the frame, providing lateral support on this first angular section βΐ, and

- Either retracted below the turntable 2 on a second angular section β2, fixed relative to the frame, diametrically opposite, of the turntable, the belt element 31 depriving the bearing objects resistant to centrifugal force on this second section angular β2, and to authorize their evacuation by exit S.

In Figure 9, we note that the sum of the angles βΐ and β2 forms the full angle (360 °). Such an embodiment where the belt system consists of a single piece can be more restrictive than the previous embodiment, which provides for a belt in several independent sections: it is indeed more difficult to control the dimension from the area where objects are deprived of support by the belt system.

In order to overcome this annoyance, a fixed deflector 10 ', visible by way of example in FIG. 9, can be positioned locally just downstream of the outlet S. The function of the fixed deflector 10' is to prevent the exit of the pieces side by side constituting a ramp, fixed, providing a fixed lateral support thanks to which the pieces side by side of the organized pieces (ie the pieces organized in line authorized to leave) are separated from the exit S.

As can be seen in FIG. 9, the ramp formed by this fixed deflector 10 'extends further downstream of the outlet S over the entire second angular section β2 for which the rotating belt is retracted below the plate (depriving the objects lateral support). The fixed lateral support provided by the deflector 10 'extends to the first angular section βΐ for which the belt element 31 is again projecting above the plate, again providing a rotating lateral support synchronized with the rotation of the tray (for objects coming from the fixed deflector).

The invention also relates to a method of sorting and / or counting coins implemented in a machine according to the invention. According to one embodiment, the plate and the belt system are rotated at a speed so as to obtain a sorting and / or counting capacity greater than 3000 pieces per 5 minute, such as for example greater than 4000 pieces per minute in particular between 5,000 minute pieces and 10,000 minute pieces, and for a piece diameter of 28mm (or greater).

NOMENCLATURE

Embodiment of Figures 1 to 6:

1. Sorting and / or counting machine

2. Tray,

20. Tray border (for centrifuged and organized objects),

21. Conical deflector,

3. Belt system,

30. Belt sections,

4. Articulated arm,

40. Proximal end of the arm,

4L Distal end of the arm,

5. Control device,

50. Cam (control device),

51. Cam follower (control device),

6. Spring system,

60. Body (system),

61. Piston rod (system),

7. Cover,

8. Counting cell,

9. Linear conveyor,

10. Fixed deflector,

PL Position of engagement (Figure 5),

P2. Cleared position (Figure 6),

S. Exit,

Embodiment of Figures 7 and 8

1. Sorting and / or counting machine

2. Tray,

3. Belt system,

31. Belt element (in one piece),

10. Deflector providing fixed lateral support

A2. Axis of rotation of the plate,

A31. Axis of rotation, at an angle of inclination between the axis of rotation A2 of the plate and the axis of rotation A31 of the belt element 31, βΐ. Angular section (fixed) on which the belt element 31 protrudes above the plate, providing lateral support for the objects present at the edge of the plate, β2. Angular section (fixed) on which the belt element 31 is retracted below the platform, depriving the objects of lateral support.

Claims (14)

1. Machine (1) for sorting and / or counting loose objects, comprising: - a turntable (2) intended to receive loose objects and to drive them in rotation, - a belt system (3), circular at the periphery of the plate, configured to constitute a lateral support for objects centrifuged by the turntable, and up to a fixed outlet (S), constituted by a peripheral zone without lateral support , through which objects organized in a line and deprived of centrifugal force-resistant support are ejected, characterized in that said belt system (3) is rotatable, configured so that the lateral support created is synchronized at the speed of rotation of the plate (2) and rotating jointly with said plate. 2. Machine according to claim 1, in which the belt system (3) comprises several independent belt sections (30) synchronized with the rotation of the plate (2) according to a first degree of freedom in rotation to ensure the drive. objects, each belt section (30) being movable in a second degree to pass from an engagement position (PI), where said belt section (30) constitutes a lateral support for the object centrifuged by the plate s opposing the centrifugal force, towards a disengaged position (P2) where the belt section (30) retracts and deprives the bearing object resisting the centrifugal force. 3. Machine according to claim 2 wherein each belt section (30) is driven by an articulated arm (4), substantially radial, connecting the plate (2) and said belt section (30), ensuring the rotational drive of said section (30) together with the plate. 4. Machine according to claim 3, in which each arm (4) is pivotally articulated at its proximal end (40) to said plate along an axis perpendicular to the axis of rotation of the plate and perpendicular to the longitudinal axis of the arm, said pivot constituting the second degree of freedom allowing said belt section (30) to pass from the high engagement position PI, where said belt section constitutes a lateral support for the object centrifuged by the plate, towards the released position (P2), low, where the belt section (30) retracts and deprives the bearing object resistant to centrifugal force. 5. Sorting machine according to one of claims 2 to 4, having a control device (5) configured to control the movement of each belt section according to the movement of travel authorized by the second degree of freedom to pass the section of belt from the engagement position PI to the disengaged position P2, and vice versa, as a function of the angular position of the said belt section during its displacement according to the displacement stroke authorized by the first degree of freedom, namely the synchronized continuous rotation to that of the plate, and by reference to the outlet (S), fixed relative to the frame. 6. Machine according to claim 5, wherein said control device (5) comprises: - a cam (50) forming a circular track secured to a fixed frame of the machine, - cam followers (51), respectively integral with the belt sections, capable of following the circular path of the track during rotation, the track having a slope at the exit zone (S) followed by the followers of cam (51) causing the belt sections to pass from their engagement position (PI) to their disengaged position (P2). 7. Machine according to claim 6, comprising spring systems (6), such as metallic or pneumatic spring constraining the cam followers (51) against the cam track (50). 8. Machine according to one of claims 1 to 7, in which a cover (7) extends as a peripheral covering the peripheral border area of the rotating plate (2), the inter-space along the height (h ) between the underside of the cover and the upper surface of the turntable defining the maximum insertion height for organized objects centrifuged at the edge of the turntable. 9. Machine according to claim 8 comprising a system for adjusting the height between the cover (7) and the plate (2). 10. Machine according to one of claims 1 to 9 comprising a counting cell (8), targeting the organized objects and in a row one after the other. 11. Machine according to claim (s) 1 or 7 to 10, in which the belt system (3) is a belt element (31), circular, in one piece, driven in rotation about its axis (A31), and in synchronization with the turntable (2), the axis of rotation of the plate (A2) and the axis of rotation of the belt element (31) being inclined so that the belt element (30) is projecting above the plate (2) on a first angular section (βΐ) of the turntable (2), fixed relative to the frame, providing lateral support, and is retracted below the turntable (2) on a second angular section (β2) fixed relative to the diametrically opposite frame, of the turntable, the belt element (31) depriving the bearing objects resistant to centrifugal force on the second angular section (β2 ). 12. Machine according to claim 11 comprising a fixed deflector (10 '), positioned locally just downstream of the outlet (S) providing a fixed lateral support by which the pieces side by side of the organized pieces are spaced from the outlet (S) , the fixed lateral support extending, downstream of the outlet (S), over the entire second angular section (β2) for which the rotating belt element is retracted below the plate (2) up to the first angular section (βΐ) for which the rotating belt element (31) protrudes above the plate, again providing a rotating lateral support, synchronized with the rotation of the plate. 13. Use of a machine according to one of claims 1 to 12 for sorting and / or counting coins. 14. Use according to claim 13, for which the tray and the belt system are rotated at a speed so as to obtain a sorting and / or counting capacity greater than 3000 pieces per minute, as between 5000 and 10,000 pieces per minute, for a piece diameter of at least 28 mm. 1/4